Blower



(No Model.)

J. WOODRUFF.

BLOWER..

No. 270,271. Patented Jan. 9,1883.

'UNITED STATES PATENT FFTCE.

Josera WOODRUFF, OF RAEWAY, New JERSEY.

BLOWER.`

SPECIFICATION forming part of Letters Patent No. 270,271, dated January 9, l8t3,

(No modelo To all whom it may concern Be it known that I, JOSEPH WOODRUFF, of Rahway, in theJ county ot' Union and State of New Jersey, haveinvented an Improvement in Blowers, ot' which the following is a specifica tion.

Figure 1 is a vertical longitudinal section of my improved blower and its connections. Fig. il is a vertical section, showing the blower, furnace, boiler, and connecting-pipes. Fig. 3 is an end view of the blower with. the front support of its shaft removed. t

My invention relates to a blower adapted principally to throw a current of air and steam into the furnace of a steam-boiler for the purpose of facilitating combustion therein.

In thedrawings the blower is shown as l' intend it shallordinarilybe used-namely, in receiving a jet of steam' from the boiler, mixingitwith air, and throwingitinto and through the furnace-lire.`

The letter A represents my blower, which is constructed of a hollow outer cylinder or pipe, B, which may be part of the pipe leading from the blower to the furnace. A rectangular frame-work, C, is 'fastened to the cylinder B and traverses the open end of the cylinder. rlhis frame-work C extends back some distance beyond the end ofthe cylinder B. v

G is a cross-bar fastened irmly within the cylinder B and passing th rough or near the axis of that cylinder.

D and E are bearings upon which revolves the fan F. These bearings consist of short rods terminating in points or hollowed at the ends, and projecting inward toward each other from the back bar of the frame C and from the cross-.bar G, respectively. The bearing E is rigidly attached to rthe bar G, while the bearing l) is screw-threaded and provided with the nuts a c, so that it can be brought nearer to or farther from the bearing E, and fastened firmly by the nuts a a in the desired position; but instead of adjusting the position of the bearing D that of E may be made adjustable, or both. The fan F has a central axis or hub, H, which terminates in projections d d, each slightly hollowed at its tip, or pointed to admit and fit the points of the bearings D andE, respectively, on which the fan F is supported and revolves. The hub H, along its middle portion, carries a series of short and stout ribs, b b b, set obliquely and parallel to each other around the axis of the hub. To these ribs b b b are bolted or otherwise firmly fastened the wings e e e, with curved outer edges, so as to come as close as may be to the cylinder B. The hub H, ribs b, and Wings e together form a fan, which, when set upon the bearings D and E andwithin the cylinder B, forms an internal revolving fan within said cylinder. The parts B G C D E F, above described, constitute the blower A.

I represents a pipe supported on the standard g or otherwise, so that the steam or air sent through the pipe will strike against the wings of the fan F and cause the fan to revolve. The pipe I is shown in Fig. 2 as connected with the steam-boiler J, and provided with a cock, h, to regulate the low of thesteam.

K is a pipe extending from the lower or inner opening of the blower A through the wall S into the boiler-furnace L at a point below its grate M. f Another pipe, N, leads from an opening in one side of the cylinder B into the furnace L above the grate. This pipe N has a number Vot' perforations through that portion of it which is within the furnace, and

the opening into .this pipe from the cylinder` B may be closed or left open to a greater or less degree by the operation of the damper P. This damper connects by a crank on its shaft with a handle, t, by means of which it can b e readily and properly adjusted to let more or less air into the furnace above the grate'.

The operation of my invention, when used in connection with a steam-jet, is as follows: When the cock his opened steam rushes from the boilerJ, and through the pipe lisdischarged against the wings ofthe fan F, causing the fan to revolve on its bearings. Air is drawn in through the open upper or outer end of the cylinder B, in which the fan revolves, and is mixed with the steam and thrown out by the revolving fan through the pipe K into the furnace, and passes up through the grate-bars,

stimulating the furnace-lire,'and greatly aid by opening the damper P by means of its han- -with cylinder B, fan F, pipes K and N, and die t. The attendant by observing the llame damper P, all arranged foroperation substancan easily regulate the exact quantity of' air tially as 'herein shownand described'.

admitted by adjusting the damper P toits JOSEPH WOODRUFF. 5 best position for the purpose. Witnesses:

I claimu HARRY M. TURK,

The boiler J and steam-pipe l, combined. 'WILLY'Gn E. SCHULTZ. 

